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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 07-10-2011, 09:01 PM
AngelWinks AngelWinks is offline
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Location: Colorado
 
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Mein Auto: 92 BMW 3series
Help with my Baby please

I have a 92 325i (fondly dubbed Betty) and am having problems with her. My husband has done everything we can figure and still nothing. It lopes or surges at an idol, back fires, has no pickup and is getting poor fuel mileage. We have checked fuel pump, fuel regulator, changed plugs (to platinum 4 we will be changing that) changed o2 sensor, mass airflow sensor, a bad coil, injector rails and the computer. We have checked all the the replaced parts including injectors with positive results. We are not sure what the problem is and are desperately seeking help. Any ideas?
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  #2  
Old 07-10-2011, 09:04 PM
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TRaV MaNN TRaV MaNN is offline
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Fuel filter. Clogged ICV. Torn intake boot/vac leak somewhere. Make sure you use some good NGK's too.
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  #3  
Old 07-10-2011, 09:05 PM
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ZeGerman ZeGerman is online now
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Did you check for vacuum leaks?
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  #4  
Old 07-10-2011, 09:05 PM
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omw41 omw41 is offline
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Splicing

Well, air, spark and fuel, that's what you need and it looks like you are covering that. It reminds me of a problem I had once. Are there any wires you have cut and spliced uner the hood? If so, unwrap them and review them. Yeah. I agree with the vac leaks and ICV check too.

Last edited by omw41; 07-10-2011 at 09:06 PM.
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  #5  
Old 07-10-2011, 09:08 PM
tchavera tchavera is offline
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i dont understand. you changed the spark plugs or you're going to. also did you only replace one coil? i would try all new coils and plugs but what do i know. also with these issues i would imagine a check engine light on. do you have one? or know the code if you do..
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  #6  
Old 07-10-2011, 09:13 PM
AngelWinks AngelWinks is offline
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only had one coil that was bad so we replaced one. We changed the plugs but have heard and actually experienced bad things with the platinum 4 so we are changing them again. The only code the car pulls is 1221. When we first started working on it it pulled a 1222.
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  #7  
Old 07-10-2011, 09:14 PM
AngelWinks AngelWinks is offline
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Changed fuel filter, oil and oil filter
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  #8  
Old 07-10-2011, 10:03 PM
Davetheg Davetheg is offline
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Location: Toronto
 
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Mein Auto: 325i
Quote:
Originally Posted by AngelWinks View Post
I have a 92 325i (fondly dubbed Betty) and am having problems with her. My husband has done everything we can figure and still nothing. It lopes or surges at an idol, back fires, has no pickup and is getting poor fuel mileage. We have checked fuel pump, fuel regulator, changed plugs (to platinum 4 we will be changing that) changed o2 sensor, mass airflow sensor, a bad coil, injector rails and the computer. We have checked all the the replaced parts including injectors with positive results. We are not sure what the problem is and are desperately seeking help. Any ideas?
I suggest checking to see if the catalytic converter is plugged. They often corrode from the inside and become blocked - this may lead to some of the symptoms you are describing.
Also check for air leaks in the intake manifold or any of the air hoses. If the car is on a hoist - tap the catalytic converter. If it sound like it is full of gravel - it might be plugged.

Also: Check idle control valve - Before changing all these parts have a mechanic give you a computer fault analysis.
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Old 07-10-2011, 10:58 PM
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IgotBMW IgotBMW is offline
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  #10  
Old 07-11-2011, 02:45 AM
DenKare DenKare is offline
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Location: Canada
 
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Mein Auto: 1995 325is
change sparkplugs back to OEM ngk not some bosch +4 which causes worse idle also check ICV MAF etc.
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backfiring, poor acceleration, poor performance, rough idol


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